Analysis of the characteristics of steel structural profiles

1、 Floor support plate

Also known as steel bearing plate or building profiled steel plate, it is formed by rolling and cold bending of galvanized steel plate. Its cross-section is V-shaped, U-shaped, trapezoidal or similar waveforms, mainly used as a permanent template, and can also be selected for other purposes.

During the use stage, the floor support plate serves as the tensile steel bar for the concrete floor slab, which also improves the stiffness of the floor slab and saves the amount of steel and concrete used.

The embossing on the surface of the profiled plate creates a strong bonding force between the floor bearing plate and the concrete, forming a whole between the two. Equipped with stiffeners, the floor bearing plate system has a high and strong bearing capacity.

Profiled steel plate composite plate (floor support plate, steel support plate) is a very reasonable structural form, which can fully utilize the advantages of good tensile and compressive properties of steel and concrete according to the positions and characteristics of its constituent components, and has good seismic and construction performance. This structure is currently widely used in high-rise buildings both domestically and internationally.

Comparison between floor support slab and ordinary reinforced concrete floor slab

1. The floor support plate can serve as a permanent and long-lasting template for cast-in-place concrete, eliminating the process of installing and removing templates during construction;

2. After the installation of the floor support plate, it can be used as a construction platform, and as there is no need to use temporary support, it does not affect the work of the next floor construction plane;

3. The floor support plate can be used as the bottom reinforcement of the floor slab, reducing the workload of installing the plate reinforcement;

4. Based on the different interface shapes of the compression plate, Zui Duo can reduce the amount of floor concrete by 30%, reduce the self weight of the floor, and correspondingly reduce the size of beams, columns, and foundations, thereby improving the overall performance of the structure;

2、 I-shaped steel

A steel beam is a long strip of steel with an I-shaped cross-section. Its specifications are expressed in millimeters of waist height (h) * leg width (b) * waist thickness (d), such as "I 160 * 88 * 6", which means I steel with a waist height of 160 millimeters, leg width of 88 millimeters, and waist thickness of 6 millimeters. I-beams are divided into three types: ordinary I-beams, light I-beams, and H-beams.

The flange of ordinary and light I-beams gradually thins from the root to the edge, with a certain angle. Due to their relatively high and narrow cross-sectional dimensions, there is a significant difference in the moment of inertia between the two main sleeves of the cross-section. Therefore, they are generally only used for components that are bent in the plane of the web or to form a lattice load-bearing component. It is not used for axially compressed components or components that are perpendicular to the web plane and still curved, which has significant limitations in its application range.

I-beam is widely used in various building structures, bridges, vehicles, brackets, machinery, etc.

3、 C-shaped steel

They are all processed by hot rolling and cold bending, and automatically processed by a C-shaped steel forming machine.

The wall is thin and lightweight, with excellent cross-sectional performance and high strength. Compared with traditional channel steel, the same strength can save 30% of the material.

C-shaped steel purlins are divided into five specifications based on their height: 80, 100, 120, 140, and 160. The length can be determined according to engineering design, but considering transportation and installation conditions, the total length generally does not exceed 12 meters.

C-beam wide